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Finding the Fourth Proportional to 10,412.40, 14,621.10 and 10,412.40

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Solution

The fourth proportional to 10,412.40, 14,621.10 and 10,412.40 is: 14,621.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,412.40 : 14,621.10 = 10,412.40 : x
  2. Step 2: Convert to fraction form
    10,412.40/14,621.10 = 10,412.40/x
  3. Step 3: Cross multiply
    10,412.40x = 14,621.10 × 10,412.40
  4. Step 4: Simplify right side
    10,412.40x = 152,240,741.64
  5. Step 5: Solve for x
    x = 152,240,741.64/10,412.40
  6. Step 6: Final answer
    x = 14,621.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.